CN111172914A - Hydraulic parking spot lock - Google Patents
Hydraulic parking spot lock Download PDFInfo
- Publication number
- CN111172914A CN111172914A CN201811333464.9A CN201811333464A CN111172914A CN 111172914 A CN111172914 A CN 111172914A CN 201811333464 A CN201811333464 A CN 201811333464A CN 111172914 A CN111172914 A CN 111172914A
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- China
- Prior art keywords
- oil
- hydraulic
- parking space
- box body
- stop electrode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
- E01F13/044—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface
- E01F13/046—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface the obstructing members moving up in a translatory motion, e.g. telescopic barrier posts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
- E04H6/42—Devices or arrangements peculiar to garages, not covered elsewhere, e.g. securing devices, safety devices, monitoring and operating schemes; centering devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
- E04H6/42—Devices or arrangements peculiar to garages, not covered elsewhere, e.g. securing devices, safety devices, monitoring and operating schemes; centering devices
- E04H6/422—Automatically operated car-parks
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to a hydraulic parking spot lock which comprises a box body, wherein an opening and a first oil changing port are formed in the upper surface of the box body, a second oil changing port is formed in the lower surface of the box body, an oil way pipeline is arranged on the outer surface of the box body and is connected with the first oil changing port and the second oil changing port, and a first check valve is arranged in the oil way pipeline; the lock body structure penetrates through the opening and is arranged in the box body, the bottom of the lock body structure is connected with the inner wall of the box body, a plurality of second one-way valves are arranged at the bottom of the lock body structure, and the conduction directions of the second one-way valves and the first one-way valves are the same; the control device comprises a central processing unit, a power supply and a signal input device, wherein the central processing unit is connected with the power supply, the signal input device, the first one-way valve and the second one-way valve. The hydraulic parking spot lock provided by the invention is simple in structure and operation, and has the advantages of low loss and long service life.
Description
Technical Field
The invention relates to the technical field of parking space lock devices, in particular to a hydraulic parking space lock.
Background
Along with the automobile holding amount in the society at present is more and more, the difficult problem of parkking is more and more obvious, for this problem, many car owners adopt the mode of buying the parking stall to make things convenient for oneself to park, but in many times, own parking stall is taken up by others very easily, then takes the method of locking the parking stall and prevents that the parking stall is taken up.
The mode that will install parking stall ground lock is taken to the majority now, and parking stall ground lock includes stop part, vaulting pole and base, and stop part can stand under the effect of vaulting pole, highly surpasss vehicle chassis height, can block that the vehicle gets into the parking stall, and stop part and vaulting pole all set up on the base, and the base is fixed subaerial.
But present parking stall ground lock has the vaulting pole activity inconvenient, and warp easily and block or the base is connected mostly bolted connection with ground, easily destroyed scheduling problem.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a hydraulic parking spot lock, which comprises the following specific implementation modes:
the embodiment of the invention provides
A fluid pressure type parking stall lock includes:
the hydraulic oil tank comprises a tank body, wherein an opening and a first oil changing port are formed in the upper surface of the tank body, a second oil changing port is formed in the lower surface of the tank body, an oil way pipeline is arranged on the outer surface of the tank body and connected with the first oil changing port and the second oil changing port, a first check valve is arranged in the oil way pipeline, and hydraulic oil is filled in the tank body;
the lock body structure comprises a sealing chassis, the sealing chassis is arranged in the box body, the side wall of the sealing chassis is abutted against the inner wall of the box body, the sealing chassis can move up and down in the box body, the top end of the lock body structure extends out of the opening, a plurality of second channels are arranged on the sealing chassis, second one-way valves are arranged in the second channels, and the conduction directions of the second one-way valves and the first one-way valves are the same;
the control device comprises a central processing unit, a power supply and a signal input device, wherein the central processing unit is connected with the power supply and the signal input device, and the central processing unit is also connected with the first one-way valve and the second one-way valve.
In a specific embodiment, the tank further includes a hydraulic pump disposed in the oil line, and connected to the first oil change port and the first check valve.
In a specific embodiment, a hydraulic oil filter is arranged in the oil pipeline, an oil inlet of the hydraulic oil filter is connected with the first one-way valve, and an oil outlet of the hydraulic oil filter is connected with the first oil changing port.
In a specific embodiment, a hydraulic oil filter is arranged in the oil pipeline, an oil inlet of the hydraulic oil filter is connected with the first oil changing port, and an oil outlet of the hydraulic oil filter is connected with the first one-way valve.
In a specific embodiment, the lock body structure further includes:
the bottom end of the blocking part is connected with the sealing chassis, and the top end of the blocking part penetrates through the upper surface of the box body through the opening.
In a specific embodiment, the outer surface of the blocking portion is provided with a limiting ring, and the limiting ring is arranged above the opening.
In a specific embodiment, a sealing ring is arranged in the opening, and the blocking part penetrates through the sealing ring.
In a specific embodiment, the material of the barrier is metal or stone.
In a specific embodiment, the upper surface of the lock body structure is provided with a sensor, and the sensor is connected with the central processing unit.
In a specific embodiment, the control device further includes a first stopper electrode, a second stopper electrode, and a third stopper electrode, the first stopper electrode and the second stopper electrode are disposed on the inner wall of the box, the first stopper electrode is located above the second stopper electrode, the third stopper electrode is disposed on the sealing chassis and the side wall of the box, the first stopper electrode, the second stopper electrode, and the third stopper electrode are located on the same vertical line, and the first stopper electrode, the second stopper electrode, and the third stopper electrode are all connected to the central processing unit.
The invention has the beneficial effects that:
1. according to the hydraulic parking space lock, the central processing unit in the control device controls the opening and closing of the first one-way valve and the second one-way valve, so that hydraulic oil in the box body flows from the upper part and the lower part of the lock body structure, when the hydraulic oil enters the lower part of the lock body structure, the lock body structure rises, and the parking space lock is closed; when hydraulic oil enters the upper part of the lock body structure, the lock body structure descends, the parking space lock is opened, compared with a transmission mechanical structure, the hydraulic parking space lock is simple in structure and operation and long in service life, and the blocking part is made of metal or stone materials and is not easy to damage.
2. According to the hydraulic parking space lock provided by the invention, the central processor is used for sending an unlocking or locking command, and the opening or closing of the one-way valve is controlled to enable hydraulic oil to enter the upper side or the lower side of the sealed chassis, so that the lifting of the lock body structure is controlled, the parking space is closed or opened, a driver can manually open or lock the parking space lock in the whole process without getting off the vehicle, and a large amount of time is saved.
Drawings
Fig. 1 is a schematic structural view of a hydraulic parking lock according to the present invention;
fig. 2 is a schematic view of a hydraulic tank and a lock body structure part provided by the invention.
Description of reference numerals:
1, a box body; 2, a lock body structure; 3 a control device; 4, a sensor; 11, opening; 12 a first oil changing port; 13 a second oil changing port; 14 a first one-way valve; 15 oil line pipes; 21 a blocking part; 22 sealing the chassis; 23 a second channel; 24 a second one-way valve; 31 a central processing unit; 32 a power supply; 33 a signal input device; 34 a first stopper electrode; 35 a second stopper electrode; 36 a third stopper electrode; 111 a seal ring; 211 a stop collar.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and specific examples, but the present invention is not limited thereto.
This embodiment provides a fluid pressure type parking stall lock, includes:
the hydraulic oil tank comprises a tank body 1, wherein an opening 11 and a first oil changing port 12 are formed in the upper surface of the tank body 1, a second oil changing port 13 is formed in the lower surface of the tank body 1, an oil line pipeline 15 is formed in the outer surface of the tank body 1, the oil line pipeline 15 is connected with the first oil changing port 12 and the second oil changing port 13, a first check valve 14 is arranged in the oil line pipeline 15, and hydraulic oil is filled in the tank body 1;
the lock body structure 2 comprises a sealing chassis 22, the sealing chassis 22 is arranged inside the box body 1, the sealing chassis 22 is attached to the inner wall of the box body 1, the top end of the lock body structure 2 extends out of the opening 11, the sealing chassis 22 enables the inside of the box body 1 to be divided into an upper cavity and a lower cavity, a plurality of second channels 23 are arranged on the sealing chassis 22, second one-way valves 24 are arranged in the second channels 23, the conduction directions of the second one-way valves 24 and the first one-way valves 14 are the same, and when the second one-way valves 24 are closed, hydraulic oil of the upper cavity and hydraulic oil of the lower cavity are not communicated;
the control device 3, the control device 3 includes the central processing unit 31, the power 32, the signal input device 33, the power 32 provides the electric power for the whole control device 3, the central processing unit 31 connects power 32 and signal input device 33 separately, the central processing unit 31 also connects the first check valve 14 and the second check valve 24, the central processing unit 31 sends the unlocking signal or the lock-off signal to the first check valve 14 or the second check valve 24 according to the parking application or the parking stop application that the signal input device 33 inputs, the first check valve 14 or the second check valve 24 opens or closes after receiving the unlocking signal or the lock-off signal;
hydraulic oil can flow above and below the lock body structure 2 through the second check valve 24, and also can flow above and below the lock body structure 2 through the first check valve 14 and the oil passage pipe 15, and when hydraulic oil enters the below of the lock body structure 2, the lock body structure 2 can be pushed to move upwards, otherwise, the lock body structure 2 can be moved downwards.
Preferably, the first check valve 14 is a downward check valve, that is, after the first check valve 14 is opened, hydraulic oil flows from the inside of the box body 1 to the oil line pipeline 15 through the first check valve 14, and finally reaches the upper portion of the hydraulic oil tank through the first oil changing port 12, the second check valve 24 is also a downward check valve, and after the second check valve 24 is opened, hydraulic oil can enter the lower portion of the lock body structure 2 from the upper portion of the lock body structure 2
Taking the first check valve 14 and the second check valve 24 as downward check valves as an example, the specific principle of the present invention is as follows:
when the parking spot lock is not in operation, the parking spot lock is in a normally-closed state, that is, the lock body structure 2 is kept at a position extending out by the maximum distance, and at the moment, the first check valve 14 and the second check valve 24 are both in a closed state.
When a user inputs a parking request through the signal input device 33, the central processing unit sends an unlocking instruction to the first check valve 14 to control the first check valve 14 to be opened according to request information input by the signal input device 33, hydraulic oil enters the upper cavity in the box body 1 through the second oil changing port 13 and the oil pipeline 15 through the first oil changing port 12 under the action of internal pressure to push the lock body structure 2 to move downwards to open the parking space lock, so that a vehicle can enter a parking space, and after the lock body structure 2 reaches the lowest position in the box body 1, the central processing unit sends a closing signal to the first check valve 14 to control the first check valve 14 to be closed, so that the parking space lock is kept in an unlocking state.
When the two vehicles stop parking and leave the parking space, a user inputs a parking stopping request through the signal input device 33, the central processing unit sends a lock closing instruction to the second one-way valve 24 to control the second one-way valve 24 to be opened according to request information input by the signal input device 33, hydraulic oil enters the lower cavity through the second channel 23 under the action of internal pressure and gravity to push the lock body structure 2 to move upwards to close the parking space lock, so that the parking space is in a non-parking state, and after the lock body structure 2 reaches the uppermost position in the box body 1, the central processing unit sends a closing signal to the second one-way valve 24 to control the second one-way valve 24 to be closed, so that the parking space lock is kept in a lock closing state.
According to the hydraulic parking spot lock, signals are input to the central processing unit 31, the central processing unit 31 controls the one-way valve to be switched on and off through the control circuit, other operations are not needed, the operation is simple, only when the valve is opened, hydraulic oil flows between the upper cavity and the lower cavity to push the lock body structure 2 to move, the whole mechanical friction is small, the friction loss of equipment is small, and the service life is long.
Further, box 1 still includes the hydraulic pump, and the hydraulic pump sets up in oil circuit pipeline 15, connects first oil change port 12 and first check valve 14, and the setting of hydraulic pump can avoid when internal pressure is less, and hydraulic oil gets into the speed of going up the cavity through oil circuit pipeline 15 slow, and the hydraulic pump can give the cavity pressure boost of going up simultaneously, improves the hydraulic oil pressure of going up the cavity, further improves the efficiency of unblanking.
Further, it strains to be provided with hydraulic oil in the oil circuit pipeline 15, first check valve 14 is connected to the oil inlet that hydraulic oil strained, the first oil change mouth 12 of oil-out connection that hydraulic oil strained, at this moment, first check valve 14 is the check valve downwards, namely hydraulic oil in the cavity under box 1 can only get into the cavity through second oil change mouth 13 and oil circuit pipeline 15, the hydraulic oil of going up the cavity can not get into cavity down through first check valve 14, hydraulic oil strains particulate matter and other impurity that can detect and filter in the hydraulic oil, avoid hydraulic oil by particulate matter pollution back, the friction harm that the pollutant caused to box 1 inner wall, influence box 1 life-span.
In another embodiment of the present invention, an oil outlet of the hydraulic oil filter is connected to the first check valve 14, and an oil inlet of the hydraulic oil filter is connected to the first oil changing port 12, at this time, the first check valve 14 is an upward check valve, that is, the hydraulic oil in the upper cavity of the box body 1 can only enter the lower cavity through the first oil changing port 12, the oil path pipeline 15 and the second oil changing port 13, and the hydraulic oil in the lower cavity cannot enter the oil path pipeline 15 through the first check valve 14.
Further, the lock body structure 2 further includes:
the barrier 21, the sealed chassis 22 is connected to the barrier 21, and the barrier 21 passes 1 upper surface of box through opening 11, and the part of barrier 21 for exposing ground, barrier 21 are the concrete device that carries out blockade to the parking stall, and barrier 21 and opening 11 are interference fit, and interference fit can make barrier 21 and opening 11 combine closely, avoids hydraulic oil and air contact to cause pressure drop.
Further, the outer surface of the blocking portion 21 is provided with a limiting ring 211, the limiting ring 211 is arranged above the opening 11, and the limiting ring 211 can prevent the blocking portion 21 from completely entering the box body 1 in the descending process.
Furthermore, a sealing ring 111 is arranged in the opening 11, the blocking portion 21 penetrates through the sealing ring 111, and the sealing ring 111 can better prevent hydraulic oil on the blocking portion 21 from being communicated with air, so that hydraulic pressure reduction, oil pollution and leakage of the hydraulic oil are prevented.
Furthermore, the blocking portion 21 is made of metal or stone, and the metal or stone is hard and not easy to damage, so that the parking space lock can be prevented from being damaged manually, and vehicles can be prevented from forcibly knocking down the parking space lock to enter the parking space.
Furthermore, the hydraulic parking space lock provided by the invention further comprises a sensor 4, wherein the sensor 4 is arranged at the top of the lock body structure 2 and is connected with the central processing unit 31, and the sound wave sensor 4 has the functions of: when the central processing unit 31 sends an unlocking instruction to the first one-way valve 14 or the second one-way valve 24, a parking detection instruction is sent to the sensor 4 at the same time, the sensor 4 sends a detection signal upwards and obtains a signal returned from the chassis of the vehicle, after the vehicle completely enters the parking space, the sound wave detector cannot detect the signal returned from the chassis of the vehicle, the parking action is judged to be finished at the moment, parking completion information is sent to the central processing unit 31, and when the central processing unit 31 receives the parking completion information, a locking instruction is sent to the second one-way valve 24 or the first one-way valve 14 to close the parking space lock;
after receiving the parking stopping request, the central processing unit 31 first sends an unlocking instruction to the first one-way valve 14 or the second one-way valve 24, and simultaneously sends a parking stopping detection instruction to the sound wave sensor 4, the sound wave sensor 4 sends a detection signal upwards, and obtains a signal returned from the chassis of the vehicle, after the vehicle completely leaves the parking space, the sound wave detector cannot detect the signal returned from the chassis of the vehicle, at this time, it is judged that the vehicle leaves the parking space, the vehicle leaving information is sent to the central processing unit 31, and when receiving the vehicle leaving information, the central processing unit 31 sends a locking instruction to the first one-way valve 14 or the second one-way valve 24 to lock the parking space.
After the sensor 4 is used, the parking space lock can be kept in a locking state in the whole process except the process of entering and exiting the parking space at any time.
Further, the control device 3 further includes a first stopping electrode 34, a second stopping electrode 35 and a third stopping electrode 36, the first stopping electrode 34, the second stopping electrode 35 and the third stopping electrode 36 are all connected to the central processing unit 31, the first stopping electrode 34 is disposed on the inner wall of the box body 1 and is close to the upper surface of the inner wall of the box body 1, the third stopping electrode 36 is disposed on the outer side of the sealing chassis 22 attached to the box body 1 and can move up and down along with the sealing chassis 22, the first stopping electrode 34 and the third stopping electrode 36 are located on the same vertical line, when the blocking portion 21 moves upward, the blocking portion cannot rise to the position close to the upper surface of the inner wall of the box body 1, the abrasion of the box body 1 due to the installation of the box body 1 is prevented, the upper portion is prevented from having no hydraulic oil at all, and there is no space for hydraulic oil to enter, which can cause the problem that the, the first stop electrode 34 can contact with the third stop electrode 36, and when the first stop electrode 34 can contact with the third stop electrode 36, the central processing unit 31 obtains a stop signal to control the opened electric valve to close, so that the blocking part 21 stops moving upwards; the second stopper electrode 35 and the third stopper electrode 36 operate on the same principle, except that the second stopper electrode 35 is located on the inner wall of the case 1 near the lower surface to prevent the sealing bottom plate 22 and the case 1 from being completely adhered.
In summary, the hydraulic parking lock provided by the present invention is explained by applying a specific preferred embodiment, and the above description of the embodiment is only used to help understanding the scheme of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention, and the scope of the present invention should be defined by the appended claims.
Claims (10)
1. The utility model provides a fluid pressure type parking stall lock which characterized in that includes:
the hydraulic oil tank comprises a tank body (1), wherein an opening (11) and a first oil changing port (12) are formed in the upper surface of the tank body (1), a second oil changing port (13) is formed in the lower surface of the tank body (1), the second oil changing port (13) is formed in the lower surface of the tank body (1), an oil way pipeline (15) is arranged on the outer surface of the tank body (1), the oil way pipeline (15) is connected with the first oil changing port (12) and the second oil changing port (13), a first check valve (14) is arranged in the oil way pipeline (15), and hydraulic oil is filled in the tank body (1);
the lock body structure (2) comprises a sealing chassis (22), the sealing chassis (22) is arranged inside the box body (1), the side wall of the sealing chassis (22) is abutted to the inner wall of the box body (1), the sealing chassis (22) can move up and down in the box body (1), the top end of the lock body structure (2) extends out of the opening (11), a plurality of second channels (23) are arranged on the sealing chassis (22), a second one-way valve (24) is arranged in each second channel (23), and the conduction directions of the second one-way valve (24) and the first one-way valve (14) are the same;
a control device (3), the control device (3) comprising a central processing unit (31), a power source (32) and a signal input device (33), the central processing unit (31) being connected to the power source (32) and the signal input device (33), the central processing unit (31) being further connected to the first one-way valve (14) and the second one-way valve (24).
2. The hydraulic parking space lock according to claim 1, wherein the box (1) further comprises a hydraulic pump, the hydraulic pump is disposed in the oil pipeline (15) and connects the first oil changing port (12) and the first check valve (14).
3. The hydraulic parking space lock according to claim 1, wherein a hydraulic oil filter is arranged in the oil pipeline (15), an oil inlet of the hydraulic oil filter is connected with the first check valve (14), and an oil outlet of the hydraulic oil filter is connected with the first oil exchanging port (12).
4. The hydraulic parking space lock according to claim 1, wherein a hydraulic oil filter is arranged in the oil pipeline (15), an oil inlet of the hydraulic oil filter is connected with the first oil exchanging port (12), and an oil outlet of the hydraulic oil filter is connected with the first one-way valve (14).
5. The hydraulic parking space lock of claim 1, wherein the lock body structure (2) further comprises:
the bottom end of the blocking part (21) is connected with the sealing chassis (22), and the top end of the blocking part (21) penetrates through the upper surface of the box body (1) through the opening (11).
6. The hydraulic parking space lock according to claim 5, wherein a limiting ring (211) is arranged on the outer surface of the blocking portion (21), and the limiting ring (211) is arranged above the opening (11).
7. The hydraulic parking space lock according to claim 5, wherein a sealing ring (111) is arranged in the opening (11), and the blocking portion (21) penetrates through the sealing ring (111).
8. The hydraulic parking space lock according to claim 5, wherein the blocking part (21) is made of metal or stone.
9. The hydraulic parking space lock according to claim 1, wherein a sensor (4) is arranged on the upper surface of the lock body structure (2), and the sensor (4) is connected with the central processing unit (31).
10. The hydraulic parking space lock according to claim 1, wherein the control device (3) further comprises a first stop electrode (34), a second stop electrode (35) and a third stop electrode (36), the first stop electrode (34) and the second stop electrode (35) are arranged on the inner wall of the box body (1), the first stop electrode (34) is located above the second stop electrode (35), the third stop electrode (36) is arranged on the sealing bottom plate (22) and the side wall of the box body (1), the first stop electrode (34), the second stop electrode (35) and the third stop electrode (36) are located on the same vertical line, the first stop electrode (34), the second stop electrode (35) and the third stop electrode (36) are all connected to the central processing unit (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333464.9A CN111172914A (en) | 2018-11-09 | 2018-11-09 | Hydraulic parking spot lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333464.9A CN111172914A (en) | 2018-11-09 | 2018-11-09 | Hydraulic parking spot lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111172914A true CN111172914A (en) | 2020-05-19 |
Family
ID=70646032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811333464.9A Pending CN111172914A (en) | 2018-11-09 | 2018-11-09 | Hydraulic parking spot lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111172914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503285A (en) * | 2021-07-23 | 2021-10-15 | 河南省稳众减振器有限公司 | Electric control self-locking oil cylinder |
-
2018
- 2018-11-09 CN CN201811333464.9A patent/CN111172914A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503285A (en) * | 2021-07-23 | 2021-10-15 | 河南省稳众减振器有限公司 | Electric control self-locking oil cylinder |
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Application publication date: 20200519 |